The wick is made of a high grade of cotton or linen. The material is woven (or braided) so that it will burn in one direction and will curl so that its end remains in the candle flame's oxidizing zone for even and intense burning. Often, wire-core wicks are used.
Differentiate among the non-urinary waste management systems. The excretory system is a passive biological system that removes excess and unnecessary materials from the body, so as to help maintain homeostasis and prevent damage. The main organs involved in waste management are the skin, lungs, liver, and kidneys.
Waste removal in the body is done through the organs of the excretory system. (The respiratory and circulatory. systems also assist in the process) Ammonia is a chemical waste that the body produces when cells break down. protein. The liver converts the ammonia to a less harmful substance called urea.